Compilare: main.cpp: In function 'char nextChar()': main.cpp:9:66: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if (pos >= BUFF_SIZE) fread(buff, BUFF_SIZE, 1, stdin), pos = 0; ^ main.cpp: In function 'int main()': main.cpp:109:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turism2.in", "r", stdin); ^ main.cpp:110:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("turism2.out", "w", stdout); ^